Slim can be used as an adjective and a verb.
The part of speech for this particular word is a noun.
part of speech
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
"Thin" can be both an adjective and a verb. As an adjective, it describes something that has little thickness or is slim. As a verb, it means to make something less thick or less dense.
The part of speech for "unfamiliar" is an adjective.
The part of speech of "came" is a verb.
The part of speech for "twirl" is a verb.
The part of speech for "explicit" is an adjective.
The part of speech for "indefinite" is an adjective.
The part of speech for "lecturer" is a noun.